ETSI's Technical Committee on Electronic Signatures and Infrastructures (TC ESI) has published a set of European standards to support the eIDAS regulation.The regulation, which focuses on electronic identification and trust services for electronic transactions in the internal market, came into force on 1 July 2016. The ETSI TC ESI standards for Trust Services Providers (TSPs), electronic signatures, electronic seals and electronic time-stamps includes a total of 19 European standards along with guidance documents and test specifications.The first series of these European standards, which addresses security and policy requirements, is used by conformity assessment bodies to audit TSPs and assess their conformity with eIDAS. This also forms an audit scheme recognised by the CA / Browser Forum for certification authorities issuing certificates for website authentication.The second series covers digital signature creation and validation. Digital signatures specified in these standards support electronic signatures, advanced electronic signatures, qualified electronic signatures, electronic seals, advanced electronic seals, and qualified electronic seals as defined in the regulation. The CAdES, XAdES and PAdES signature formats and the signature container format ASiC have now become European standards.To facilitate the implementation and the use of products and services based on digital signatures, provide mutual recognition and cross-border interoperability, ETSI TC ESI has released an update of Technical Report TR 119 000 describing the general structure for digital signature standardisation and outlining existing and potential standards for such signatures.ETSI says it is now working on complementing this set of standards with specifications on eDelivery trust services, registered email trust services, signature creation and signature validation by trust service providers.A complete list of ETSI's eIDAS standards is available at: